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Gen. Martin Dempsey, the chairman of the Joint Chiefs of Staff, is responsible for reshaping the U.S. military after 10 years of war. At the same time, he's fighting to stave off the across-the-board cuts to the defense budget.

The president of the United States has a lot on his plate. Is it too much? As we pause to celebrate our exceptional leaders on Presidents Day, perhaps it's time we start contemplating a new kind of presidency — a presidency that befits these fitful times.

Actress Connie Britton could watch Colin Higgins' comedy Foul Play a million times. "From watching a movie like Foul Play, I have always wanted to bring a sense of humor to really every role that I'm playing," she says.

Rock writer Jonathan Cott met John Lennon in 1968 and formed a working relationship with him, as well as with Yoko Ono, that would span more than two decades. Cott was the last journalist to interview Lennon, just three days before the singer was killed.

An environmental researcher argues the heavy phosphorus footprint of meat is good reason to eat less meat, given that phosphorus is a finite resource and critical for food security. But not everyone thinks we should be worried.

For a fee, Silent Circle erases messages from both the receiver and the sender's phones. The app's creators got the idea after hearing an all-too-familiar story: A friend of theirs inadvertently read a text meant for someone else.

The uproar over what critics call "pink slime" in some ground beef refocused attention on what's in the food we eat. Most packaged foods contain at least one item you wouldn't recognize. But many food experts caution that just because you don't know an ingredient doesn't mean you shouldn't eat it. This segment was originally broadcast on April 11, 2012.

Carefully developed breeds are overpowering Eastern filbert blight, which had threatened to crush the U.S. hazelnut industry.

The federal government once considered whistle-blowers a nuisance, or worse. But over the past few years, that attitude has slowly started to change. More agencies have been reaching out for tips about fraud and abuse, even if digging through the stacks of complaints can present a challenge.

A famous doctor is on trial in Spain, accused of masterminding one of the world's largest sports doping rings. Dr. Eufemiano Fuentes' client list is believed to include at least one former teammate of disgraced cyclist Lance Armstrong. The doctor says he treated athletes from other sports, as well.